We can see here that <u>deliberate bias</u> is the source error that can be avoided by locating questions sensitive to bias and changing or dropping them.
<h3>What is bias?</h3>
Bias actually refers to prejudice and judgment which is unreasonable against someone or something. Bias is not actually founded as a known fact.
So, we can see here that deliberate bias is the source error that can be avoided by locating questions sensitive to bias and changing or dropping them.